diff --git a/pyproject.toml b/pyproject.toml
index c31e6e4..b1c84b0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dev = [
     "black==25.9.0",
     "coverage==7.10.7",
     "flit==3.12.0",
-    "mypy==1.18.2",
+    "mypy==1.19.1",
     "usort==1.0.8.post1",
     "ufmt==2.8.0",
     "ruff>=0.14.3",